Philip Chaabane, CEO - I-Tech AB
Application of Biotechnology in Antifouling Solutions for Hard Fouling Prevention
Hull Performance & Insight Conference (HullPIC)
Gubbio, Italy - May 6, 2019
A bio-tech approach: Receptor stimulation
Receptor
stimulation triggers
flight mode
Image provided by CMP
Barnacle cyprid larvae
Selektope® - adding new dimensions
=
Single biocide system within
polyurethanes and epoxy
silicones for ship hulls or other
structures
=▪ Offshore cables
▪ New hull maintenance options
▪ Wave power etc
Image provided by CMP
Reduce spread of aquatic species• Hull biofouling identified as key IAS vector.
Reduce fuel bill• Acknowledged fuel saving potential across the global fleet
corresponding to around 10-15 billion USD
Reduce exhaust emissions• >100 million tonnes of CO2 emissions saving + a lot of
SOx/NOx/PM
Regulatory disruption already executed• Remaining active agents are among the most thoroughly
evaluated industrial products all categories.
”The hull is in the air”
Alternatives to cut CO2 by 50%:
1) Technologies independent from ship type
and with relatively low investment
barrier. Your hull is a fundamental piece in
the CO2 equation!
2) Technologies suitable on specific vessels
and with high investment barriers
(alternative fuels, wind rotators, new bulb,
new propeller
Natural Receptor Stimulation
Octopamine Receptors from the Barnacle Balanus improvisus Are Activated by the α2-Adrenoceptor Agonist MedetomidineUlrika Lind, Magnus Alm Rosenblad, Linda Hasselberg Frank, Susanna Falkbring,
Lars Brive, Jonne M. Laurila, Katariina Pohjanoksa, Anne Vuorenpa¨a¨ , Jyrki P. Kukkonen,
Lina Gunnarsson, Mika Scheinin, Lena G. E. Mårtensson Lindblad, and Anders Blomberg
• Signal translates to
swimming/kicking behviour
1.Ligands, located outside the cell
2.Ligands connect to specific receptor proteins
3.The receptor releases a messenger once the
ligand has connected
• Medetomidine is highly selective and links to
the barnacles larvae octopamin receptor
transmitting signals.
https://en.wikipedia.org/wiki/Receptor_(biochemistry)
Purpose of a receptor Receptor pocket
Triggering flight mode
Life cycle analysis
X
• Exploratory surface
behaviour necessary to settle
is blocked.
• Kicking frequency is around
100/min
• Swim speed can be twice its
length per second.
Highly compatible with AF coating components
Combination with all existing biocides is
possible.
A glimpse of vessel types using Selektope
Self depletion systems:
• Rosin based / acrylic
Self polishing systems:
• Silyl-acrylates, Metal-
acrylates, Nano-acrylates
Selektope® - a differentiating agent
• Powerful enough to replace CuO and flexible enough to boost
• Repellent mode of action (flight mode)
• Used at around 0,1%w/w (a few grams per liter paint)
• Is ultra low leaching (e.g., 2g vs > 100g /day) .
1.6
96
756
SELEKTOPE ECONEA CU2OALT A ALT B
[G/L PAINT]
Proven in-service Selektope® performance
• Globally trading MR Tanker (Team Calypso) coated with Selektope-powered AF in 2015
• Average characteristics:
• activity rate 60, average speed 12knots, Average temperature 25°C, Several long idling periods of 25 days+
Case study 1
Convincing 3-year results on Team Calypso
27 months:
• Vertical sides clean
• 6% added hull resistance
32 months
• Vertical sides clean
• 8% added hull resistance
36 months
• Vertical sides clean
• 8% added hull resistance
Month 41: only 10%
added hull resistance
(total added resistance
16%)
Case study 1
CAPSER Report. Propulsion Dynamics
Team Calypso: outperforming sister vesselsCase study 1
• 10% less increase in added
resistance that its sister ships,
so far.
• All three ships have premium
AF coatings
• One is copper-based SPC,
one is foul-release and one is
a Selektope-based SPC
Ferry shows strong antifouling properties
Helenic Seaways Nissos Chios uses Selektope AF (Cu-free) for 12 months.
Arrival condition at DD after 12 months.
Case study 2
Polyurethane with Selektope® is barnacle free
• Polyurethane material
impregnated with
Selektope
• Test panel location: west
coast of Sweden
• Submerged: May 2013 -
September 2014
• Static period: 16 months
Case study 4
Molded polyurethanes with Selektope®
• Formulation containing 0.37%
Selektope® versus reference
panel with 0% Selektope®
• Test panel location: west
coast of Sweden
• Submerged: October 2015 -
November 2017
• Static period: 25 months
Case study 4
Silicon epoxy coatings with Selektope®
• Purpose: Investigate if hard and slippery coatings doped with Selektope can be developed?
• Is there a demand link in to future trends on grooming, yachting (one-biocide only systems approved) etc?
• So far, epoxy-silicones prove strong barnacle resistance (but a lot of other fouling is attached)
• Next steps are to evaluate dynamic aspects etc.
Test panel location: west coast of Sweden. Static period: 18 months
Case study 4
www.selektope.com
www.i-tech.se
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Stay tuned for more to come